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2021 | OriginalPaper | Chapter

Influence of Tungsten Nanopowders on Enhancing the Aging Behavior of a Copper–Chromium Alloy

Authors : Gongcheng Yao, Shuaihang Pan, Xiaochun Li

Published in: Metal-Matrix Composites

Publisher: Springer International Publishing

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Abstract

Copper–chromium alloys are a class of high-strength high-conductivity copper alloys. However, limited by the copper–chromium (Cu–Cr) phase diagram, the strength of copper–chromium (Cu–Cr) alloys by precipitation-hardening has reached a certain limit. Suitable nanoparticles incorporating into copper–chromium (Cu–Cr) alloys, i.e., nano-treating, are expected to modify the aging behavior and further improve their properties. In this study, copper–chromium (Cu–Cr) alloy containing tungsten (W) nanoparticles was cast. The aging behavior of the nano-treated Cu-Cr and Cu–Cr counterparts is assessed. Tungsten (W) nanoparticles accelerate the precipitation, leading to a significant reduction in the peak aging time. Besides, the microhardness of the nano-treated copper–chromium (Cu–Cr) is increased over Cu–Cr after 45-min aging. Cold rolling can further enhance the microhardness of the nano-treated copper–chromium (Cu–Cr). Moreover, the nano-treated sample exhibits a much improved thermal stability. Thus, nano-treating the copper–chromium (Cu–Cr) alloy by tungsten (W) nanoparticles is promising to break the limits of current copper–chromium (Cu–Cr) alloys.

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Title: Influence of Tungsten Nanopowders on Enhancing the Aging Behavior of a Copper–Chromium Alloy
Authors: Gongcheng Yao
Shuaihang Pan
Xiaochun Li
Publisher: Springer International Publishing
Book: Metal-Matrix Composites
Print ISBN: 978-3-030-65248-7

Electronic ISBN: 978-3-030-65249-4

Copyright Year: 2021
DOI: https://doi.org/10.1007/978-3-030-65249-4_8

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